ELECTRICALLY OPERATED SOUND AMPLIFICATION

Brand Owner (click to sort) Address Description
ALTEC LANSING ALTEC LANSING CORPORATION 250 WEST 57TH ST. NEW YORK NY ELECTRICALLY OPERATED SOUND AMPLIFICATION AND REPRODUCING SYSTEMS AND/OR THE COMPONENTS THEREOF;
ALTEC LANSING ALTEC LANSING CORPORATION 250 WEST 57TH ST. NEW YORK NY ELECTRICALLY OPERATED SOUND AMPLIFICATION AND REPRODUCING SYSTEMS AND THE COMPONENTS THEREOF;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A sound-amplification apparatus comprises: an acoustic signal source for outputting an acoustic signal; an amplified sound source for receiving the acoustic signal from the acoustic signal source and radiating an amplified sound; a control sound source provided in a vicinity of the amplified sound source for radiating a control sound; and signal processing means for producing a control sound signal by controlling at least one of an amplitude and a phase of the acoustic signal from the acoustic signal source so that an acoustic space having a desired directionality is formed by interference between the amplified sound and the control sound, and providing the control sound signal to the control sound source.